Carbureter.



P. J. DASEY. V

GARBURETER.

APPLICATION FILED JAN. 2, 1909.

Patented Feb. 22, 1910.

i 2 SHEETS-SHEET 1,

l/V VE/V TOR jereg U036;

4 TTOHN E V8 WITNESSES I P. DASEY. GARBURETER.

APPLICATION FILED JAN. 2, 1909.

950,278. Patented Feb.22, 1910..

j 2 SHEETS-SHEET 2. Fig. E v

WITNESSES l/V l/EIV T 0!? Percy Jflasey Afro/Mrs BVM/Vra 'uurrun STATES PATENT OFFICE.

rnacv J. IxAsEY, on NEW YORK, N. Y., assxenon. or ONE-HALF 'ro THOMAS J. wnrzan,

on N W YORK, n. Y.

cnnnunn'rnn.

Specification of Letters Patent.

Application filed January 2, 1909. Serial No. 470,394.

To all whom it concern:

Be it known that I, PERCY J. DAsEY,,a citizen of the'United States, and a resident of the city of New York, borough of Manhattan. in the county and State of New York, have invented a new and Improved Carbureter, of which the following is a full, clear, andexact description.

This invention relates to carbureters such as used in connection with gas engines.

The object of the invention is to produce a carbureter having an nnproved construction which operates to draw the air in a concentrated current directly across the fuel opening from the admission valve. At this point a gap is provided through which the air flows, and the opening enlarges in an increasing ratio as the valve rises from its seat. In

this way, a suflicient supply of air is assured,

and an. e'fiicientcarbureting is also assured,-

through the valve without passing through the gap at the fuel inlet.

he invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims. Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of referenceindicate corresponding parts in all the figures. I

Figure 1 is a vertical section through a carbureter constructed according to my invention; Fig. 1 is a fragmentary vertical section showing the construction when all the air flowing through the valve is drawn across the fuel inlet; Fig. 2 is a vertical section through the carbureter taken on, the line 2-2 of Fig. 1 and looking toward the right as indicated by the arrow: Fig. 3 is a perspective of a valve ring which constitutesa feature of the invention, and Fig. 4 is a cross section through a portion of the carbureter just above the valve and taken in the plane of the'line 4 --.t of Fig. 1. Y

Referring more arficularly to the parts, 1 re resents the Bowl of the carbureter,

whic is provided atone 'side with afloat valve 2 through which the liquid fuel is admitted to the bowl, the flow through this Patented Feb. 22, 1910.

valve being regulated by a float 3 of common form. On'thev u per edge of the bowl 1, a cover 4 is seated? The lower .edge of this cover 4- is formed into a substantially cylindrical body 5, which projects down into the interior of the bowl, as shown. At'one side, as indicated in Fig. 2,, the wall of thisbody is not cylindrical, but is formed into an outwardly projecting V-shaped pocket 6 "presenting an end wall 7 and two inclined bottom faces 7 which incline upwardly, and oppositely so that they form a \l-shaped notch or angle 8. having its vertex at their meeting line. The inner portion of the bowl is formed into an-upwardly extending tubular sleeve 9,.t-hrough which the air passes upwardly. At the upper end of this sleeve,

a conical seat 10- is formed for a disk valve 11, said valve being rigidly attached to a vertical 'stem' 12 which slides vertically.

through guide brackets 13 and 14 arranged as shown. The bracket 14 is attached to the interior of the sleeve 9, and below it a coilspring 15 is provided, which thrusts downiwardly against'check nuts 16 placed on the stem, as shown in- Fig. 1.. This sprin af fords means for regulating the lift ng f o of the valve, and. byincreasing the/tension rce of the spring, the force necessary to raise the disk valve ,from its seat is increased.-

Onthe upper side ofthe cover 4, a throttle valve housing or case 17 is attached, the body of which is tubular, as shown, so as to direct the: carbureted air upwardly. In this case 17, a throttle disk 18 is rotatably mounted, bein attached to a transverse stem '19. To this stem 19 a throttle lever 20 is rigidly attached, as indicated.

On the upper end f the sleeve ring or regulator. 21 is'provided. Thisregulator consists of a ring havin a notch or gap in its wall on one side ad acentto the fuel inlet, and having an annular wall, the formof which determines the distribution of air flowing through thecarbureter. In Figs. .1 and 3, 1 illustrate a form of ring. in which a portion of the air passes u around the valve. without i:passinthrong the notch, the outer side 0 whic ring fits. against the inner face of the cylindrical portion of the wall of'the body 5. The upper ortion of the rin 21 presents a cylindrical re 22, whereas 1; e lower portion presents 9, a valve '65 chamber 4'-E'Phis chamber presentsayciis' a conical bore 23, the diameterof which increases in 'an'upward direction;- that is, in the directioninwhich the air is admitted through the valve. I 4 l Near the seat of the air valve, a, fuel inlet opening 24 is provided, and below this opening, a conical seat 25 is formed for a needle valve or spray valve 26, said valve having a stem 27 .whichextends outwardly from a'stufl'ing box 28 through the lower portion of the bowl, as indicated. This stem 27 is provided with threads 29 inthe usual manner, so that by rotating the stem, the position of its conical point with respect to the seat 25 may be regulated, in thisway controlling the extent of opening"; through which thefuel may pass. The fuel 30 within the bowl passes upwardly to the opening- 24 by a bore'31 which receives the inner end of'the stem 27,-but which is larger than the I 'te'm, as shown. Onthe side of the ring 21 which is disposed toward the V-pocket 6, the ring is formed with a dee V -sha'ped notch 32- presenting inclined e ges or facesj33. These inclined faces 33 coincide with the inclined faces 7 of the V-shaped pocket 6, and guide the air out into the pocket. r As illustrated in Fig. 1 a ring 2 1 is provided inadditio'n-to the ring 21 this ring has the same form as the ring 21 except that it has a cylindricalbore 23 of substantially the same diameter as thedis'k- These rings are interchangeable, .and when this ringus in position, there islno annular gap formed 35 around the valve disk asit rises from its seat: and all the air going "to the engine passes throughthe notch 33 across the fuel -1nlet 24%. n {From ansin'speotionof Fig. 2,. it will be in observedthat when the valve disk 11 rises" from its-seat, a-triangular' shaped opening. 34: is formed, which permits the air to flow' from the-sleeve across the fuel opening '24, into the pocket 7 audit 'will be evidentthat as the valve disk rises farther from its seat, the area of thistriangular bpening; becomes increased. It will be evident also that asthe valve' di'sk jrises,from"itsl seat,v-a ap is formed betweenits edge and-the'conica bore 23 ,of the valve-"ring, land, furthermore, as the vvalve rises, the. area 10f this'an'nular gap becomes-increased. I rovide' several ,rin' s similar-to the ring 21, ut having-different y ,formed boresg -the ratio of the air'ad'mitted around edgeofthe valve to the volume which I passes directly across the fuel inlet andthrough the notch, can-be very nicely regulated, and 'difierent efi'ects produced ini the operation of the valve, by using the d fferent 'ringsajln using the carbureterwith certain en ""e that ring will bechosen" whicif pro uces the 'best results. The air which passes across. the fuel in-' let-24: passes out into an enlarged upper cular wall at one end conforming to the curvature of the valve housing 17. The other end of the chamber is of substantiallyrectangular form and the base of the valve housing'is extended laterally so as to form a cover for the chamber as will be readily understood. From the chamber 4* the carbureted air flows into the valve casin 17, where it mixes with the uncarburete 'air which ,fiows up around the valve disk. The air admitted in the annular gap, around'thevalve disk, has the effect of relieving the pull or vacuum which is. exerted by the pistons on their intakefst oke. In other words, if the carbureter is r'awing too hard for a given amount of opening at the V-notch, it may be made to draw easier by substituting a 'ring in which the conical bore is more inclined; that is, it may be relieved by increasing the relative area of the annular gap.

' In the operation of the carbureter, it will be seen that a higher engine speed'will tend automatically to raise the/valve higher from 1ts seat, giving a greater opening or area across the fuel inlet.

From the fore oin'g it will be seen that the pocket 7 is lsposed at the side of the space above the valve disk 11, and it is the function of the notch to guide the air from under the disk outinto the-pocket. If the regulator ring 21 is employed no air will pass up around the edge of the valvedisk" and allof the air that passes through the carbureter tofthe engine will pass laterally through-the notch and into the pocket 7 from the'pocket the air will pass upwardly so as to pass by the throttle valve18. With a regulator ring 21' such as that shown in Figgl, as soon as'the disk rises from its seat it 'will not only produce an opening at the apex'of the notch through which the aircan escape fromunder the valve vdisk, but it .also' produce an annular space around the edgefof the valve disk. Under these circum 1 c stances acertain amount of air willv escape through the notch into'the pocket 7 and pass 'overthe fuel inlet; this air will be thoroughly carbureted. The air passing up in -,the' annular space around the edge of the i valve at other points will not be carbureted but will jnix'with the carbureted air which comesthrough the notch; The flow ofthe airthrough the carbureter is fully shown by the arrows in Figs.'l and2. v r 1 Having thus described my invention, I claim-as new and desire to secure by Letters .Patentzq 1. 1A earbureter having-avalve and a seat from which said valve ma rise to'admit air, 125 a member adjacent to sai valve and having an opening throu h which the air iflows in passing from sai valve, the edges of said I opening diver in fromjfeach other and formingan an l widenin'grinthe direction 13cv vicinity of said notch.

ten 'ofsaid angle in the path of the current- 1 of air flowing'through said openm'g. I 2. A carbureterhavinganannular valvesaid seat'to admit air, and a member having which the air passes outwardly at said valve,

in which the valve moves in opening, and means for admitting a liquid fuel at the verseat and a disk valve adapted to rise from a notch formed at one side thereof through said member at a point remote from said notch having acurved wall adjacent to the edge of said valve and means for admitting fuel in. the course of the air directed through the notch.

3. A earbureter having a valve disk-and a seat from whichsaid disk may rise, a ring substantially encircling said disk when raised from its seat,-said ring having a bore receding outwardly and having a notch in one side thereof, said notch being adapted to form an opening when said disk is raised, through which a portion of the air will pass, and means for admitting a liquid fuel in the.

4. A carbureter having a valve seat and a valve disk adapted'to rise therefrom to admit air, and a removable ring having an an} nular wall surroundingsaid disk and having a notch in the edge thereof at one side, said carburetcr having a fuel inlet near said notch, said notch opening communication with the space under said disk when the valve isopen whereby an air current is directed across said fuel inlet.

5. A carbureter having a valve disk and a seat from which said disk may rise to admit air, a ring having a bore and having a notch in one side thereof throu h which notch the air may flow when sald disk rises from sand I seat, a cover havin a pocket coinciding with said notch and nito which the air may.

flow from said notch, said pocket leading the air .to the outlet from said carbureterand means for admitting a liquid fuel in the vicinity .of' said notch.

6. A carbureter, havingi'a bowl presenting a ,valve' seat to admit air, a valve adapted to rise from said seat, a ring adapted to surround said valve whn raised from its seat, presenting a conical bore and having a V- shaped notch at one side thereof, said V- shaped notch forming an opening through which a portion of the air may pass by said valve, means for admitting a liquid fuel adjacent said notch, and a cover-seating on vsaid bowl and having a V pocket disposed opposite said notch, said ocket leading the air to the outlet from sai carbureter.

7 A carbureter having a;valve seat and a diskadapted to rise'from said seat to admit air-, said valve having a wall encircling the space above. said seat lying adjacent to the path of the edge of said valve and receding therefrom in an upward direction, said carbureter further having a pocket-at the side of said valve leading-to the-outlet, and a fuel inlet adjacent said pocket, said'pocket being arranged to communicate with the space under said disk when-said disk risesand affordin means for directing an air current radially across said inlet into said pocket.

"In testimony whereof I have signed my name to this specification .in the presence of.

two subscribing witnesses.

4 PERCY J: DASEY.

Witnesses:

' F. D. AMMEN, JOHN P. DAVIS. 

